Prospecting ground water resources using RS-GIS—A case study from arid western rajasthan of India |
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Authors: | M A Khan PRATAP Narain P C Moharana |
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Institution: | 1. Central Arid Zone Research Institute, 342003, Jodhpur, India
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Abstract: | In arid regions, inherent climatic conditions and adverse terrain condition pose perpetual shortage of water. The dominant
aeolian topography conceals older geological formations making it difficult to infer prospects of ground water and tapping
the same. A ground water prospect map has been prepared for a part of Jodhpur district in western Rajasthan through integrated
analysis of four major controlling factors: geology, geomorphology, structure and hydrology. Through visual interpretation
of satellite data and using Geographical Information System, twenty-five hydro-geomorphic units (prospect units) have been
delineated and mapped. Potential of each prospect unit have been discussed in reference to hydro-geomorphic units, their influence
and well inventory like well yield, water table level and quality of drinking water. 34 % of the area was classified to have
high groundwater potential and 5.8 % area was classified into low potential categories. Most of the area (60.2 %) is of moderate
ground water potential. |
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